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//===-- MipsRegisterInfo.h - Mips Register Information Impl -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the Mips implementation of the TargetRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef MIPSREGISTERINFO_H
#define MIPSREGISTERINFO_H
#include "Mips.h"
#include "llvm/Target/TargetRegisterInfo.h"
#define GET_REGINFO_HEADER
#include "MipsGenRegisterInfo.inc"
namespace llvm {
class MipsSubtarget;
class Type;
class MipsRegisterInfo : public MipsGenRegisterInfo {
protected:
const MipsSubtarget &Subtarget;
public:
MipsRegisterInfo(const MipsSubtarget &Subtarget);
/// getRegisterNumbering - Given the enum value for some register, e.g.
/// Mips::RA, return the number that it corresponds to (e.g. 31).
static unsigned getRegisterNumbering(unsigned RegEnum);
/// Get PIC indirect call register
static unsigned getPICCallReg();
/// Adjust the Mips stack frame.
void adjustMipsStackFrame(MachineFunction &MF) const;
/// Code Generation virtual methods...
unsigned getRegPressureLimit(const TargetRegisterClass *RC,
MachineFunction &MF) const;
const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
const uint32_t *getCallPreservedMask(CallingConv::ID) const;
static const uint32_t *getMips16RetHelperMask();
BitVector getReservedRegs(const MachineFunction &MF) const;
virtual bool requiresRegisterScavenging(const MachineFunction &MF) const;
virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
/// Stack Frame Processing Methods
void eliminateFrameIndex(MachineBasicBlock::iterator II,
int SPAdj, unsigned FIOperandNum,
RegScavenger *RS = NULL) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = NULL) const;
/// Debug information queries.
unsigned getFrameRegister(const MachineFunction &MF) const;
/// Exception handling queries.
unsigned getEHExceptionRegister() const;
unsigned getEHHandlerRegister() const;
/// \brief Return GPR register class.
virtual const TargetRegisterClass *intRegClass(unsigned Size) const = 0;
private:
virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
int FrameIndex, uint64_t StackSize,
int64_t SPOffset) const = 0;
};
} // end namespace llvm
#endif
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